介词的基本用法与习惯搭配He came back late, ________ which time all the guests had already left
Volunteering gives you a chance ________ lives, including your own.
Tom asked the candy makers if they could make the chocolate easier ______ into small pieces.
This machine is very easy ________. Anybody can learn to use it in a few minutes.
______an important role in a new movie, Andy has got a chance to become famous.
The old man sat in front of the television every evening, happy ________ anything that happened to be on.